David gboesbeok



(No model.)

DGROBSBECK.

Spark -Arresterl Patented Dec. 21,1880.v

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NPETERS, PHOTO-LITHOGRAPHER, WASHINGTON, D c.

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DAVID GROESBEOK, OF NEW YORK, N. Y.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 235,762, dated December21, 1880.

Application led October 28, 1880.

To all whom it may concern:

Be it known that I, DAVID GRoEsBEcK, of

. the city, county, and State of New York, have invented an Improvementin Spark-Arresters 5 and I do hereby declare that the following isafull, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part of this specification.

The drawings represent, in Figure 1, a partially-sectional side view ofa locomotive with myimproved spark-arrester thereunto applied. Fig. 2 isa section made on the line a' x -in Fig. 1.

The object of the invention is to prevent the sparks from thesmoke-boxes of locomotives from passing into their smoke stacks, andthence out with the smoke, to the great discomfortof passengers inrailway-trains.

The invention relates to that class of sparkarresters in which the smokeissuing from the boiler-dues is made to pass through water beforeentering the smoke-stack, during which passage the sparks and solidmatters suspended in the smoke are intercepted and retained in the watertank or receptacle.

Hitherto in apparatus of this kind there has been a deficiency of powerto draw or force the smoke through the water. There has also beendifficulty in keeping up a supply of water for long runs ofexpress-trains sufficient to compensateforthelossbyevaporation. Properprovision for effecting a draft while the locomotive is standing on the`track has not been made. lt is the purpose of my invention to remedythese and other defects, and to render a spark-arrester acting inaccordance with the principle named a thoroughly efcient apparatus.

In the drawings, A represents the smokebox, into which the smokedebouches from the boiler-lines, as indicated by arrows in Fig. 1.

From the smoke-box abranch pipe, B, leads directly into the smoke -stackC. A direct passage for the smoke is thus supplied, which can be used attimes when the locomotive is standing still, and also while the fire isbeing kindled in the furnace. A butterfly-valve, c, is employed to closethis passage when the spark-arresting apparatus is desired to work.

Instead of connecting the smoke-stack directly with the smoke-box intowhich the smoke (No model.)

and gases emerge from the tlues, as has hcretofore been done,I attach ittoa tank, D, and lead the exhaust-nozzle b through the side of both thesmoke-box and the tank, terminating it at or near the bottom part of thesmokestack, which part is contracted in its horizontal cross-section, asshown in Figs. 1 and 2.

From the smoke-box A a bent pipe or pipes, tlue or lines, E, lead intothe tank D, the end of the said pipe or pipes within said tanks openingdownward near the bottom of the tank at any suitable distance below theupper surface of the water retained in said tank, which water isrepresented at w w, and is supplied as needed from a saddle-backreservoir, R, carried on the front part of the boiler. rIhe supply iseffected through pipes p, Fig. 2, and is controlled by cocks c, operatedfrom the cab of the locomotive, as indicated in dotted outline inFig. 1. i

The bottom of the tank is made with pockets or concavities h, into whichthe collected solid matterssettle. At the lower part of theseconcavities are tted valves V, provided with some suitable means foropening them from the outside. A lever, L, may be used for this purpose,and it may, if desired, be provided with means for operating it from thecab of the locomotive.

A glass gage, g, to indicate the height of the water in the tank may beemployed, placed in such position that its indications may be seen fromthe cab; or any other suitable indicator which can give its indicationsinside or outside of the cab may be employed.

Above the tank D is a passage, F, which opens from the front obliquelyupward into the lower part ot' the smoke-stack. In this passage isplaced an adjustable deector, G. The adjustment of the deector Gr iseffected by the engineer in the cab by a rod, r, Fig. 1, provided withsuitable catches or fastenings, which hold the detlect'or in positionafter the adjustment is made.

The rod r is pivoted to a crank-lever, s, attached to a horizontal shaftor bar which carries the deflector G. A similar arrangement, r s',enables the engineer in the cab to control the opening and closing ofthe butterflyvalve c in the branch pipe B.

When the locomotive is moving forward the IOO v locityaids in drawingthe smoke and gases from the tank D,- the sum of the actions of the.exhaust-steam and the current through F being ample to dr'aw the smokeand gases through lthe water and discharge them out through thesmoke-stack. The action of the air-current can be increased ordiminished by the proper adjustment of the deflector D.

When the detlector is turned down into its lowest position the action ofthe air passing through F is at its minimum, and from this position itcan be elevated till the action reaches the maximum.

Itis not necessary to enter upon a calcula tion of the effects producedby the deiiector when set at various points. Itis sufficient for thepurposes of this specification to say that its action is preciselysimilar to that of like deflectorsin Ventilating-'lines which, by theirrapid motion through the air, or by the action of Winds through theflues or passages in which they are placed, induce a current through anyother passage or space with which the first-named liue is connected, or,if said space be wholly inclosed, produce a partial vacuum therein.

To prevent the swashing of the water in the tank D, I place at thewater-level a horizontal wire screen, W, or a screen of perforated metalor other equivalent, which is attached to the sides of the tank to checkthe swashing of the Water.

Vhat I desire to secure by Letters Patent is expressed in the followingclaims:

l. The combination, with the smoke-box of a locomotive, of a tank forcontaining Water exterior to said smoke-box, a pipe or passage, E,leading from the smoke-box, connecting said smoke-box and. tank, andhaving the end farthest from the smoke-box open below the waterlevel insaid tank, and a smoke-stack having its lower part connected with,inserted, or opening into said tank, substantially as and for thepurpose specified.

L. The combination, with the smoke-box A, pipe or passage E, tank D, andsmoke-stack G, of the flue or passage F, placed in front and openinginto the smoke-stack, and the adjustable deiiector G, arranged insaidflue, substantiall y las and for the purpose described.

3. The combination of the smoke-box A, smoke-stack C, and the branchpipeB, provided with a valve, c, substantially as and for the purposespecified.

4. rlhe combination, with the' smoke-box A, iiue E, tank D, andsmoke-stack O, of the water-reservoir R, pipes p, and cocks c',substantially as and for the purpose set forth.

5. 'Ihe combination, with the water-tank l), of the screen W, placed atthe water-level in said tank, substantially as and for the purpose setforth.

DAVID GROESBECK.

XVitnesses EDWARD H. WALES, JN0. E. GAVIN.y

